General Specifications
Name/Model ECHO Hardware solution DAC:CS43198*2
color Black/sky blue/orange/green Dimensions 85*55.5*14.3mm
Weight 85g Adaptive impedance PO:16~150Ω
Display 2.39 inch 222*480 IPS full view HD color screen BAL:16~300Ω
Maximum sampling rates DSD64/128/256 WAV:24bit/192K Firmware Upgrade System firmware can be upgraded via USB
FLAC:24bit/192K APE:24bit/192K EQ Built-in EQ adjustment supports audio sources up to 16B/192K
MP3/OGG/M4A/WMA micro-SD card Supports up to 256G
Format not supported: SACD/DTS Format not supported: NTFS
Bluetooth Supports SBC Bluetooth transmission Endurance 14h (output level: 40mV)
Battery  Lithium battery 1100mAh built-in memory 8G
Buttons and Ports
Type-C port Charging/Data transfer 3.5mm port Single-ended output
Buttons Multi-function buttons 4.4mm port Balanced output
microSD card slot Store microSD card Reset hole Reset
Audio Parameters
Performance and parameters of headphone output (3.5mm)
Output power L+R≥130mW+130mW(16Ω,THD+N<1%,USB IN) Peak output voltage ≥1.9V(32Ω,THD+N<1%)
L+R≥120mW+120mW(32Ω,THD+N<1%,USB IN)
L+R≥13mW+13mW(300Ω,THD+N<1%,USB IN) Output impedance <0.4Ω
Frequency response 20Hz ~ 20kHz, attenuation ≤ 0.1dB Crosstalk ≥ 73dB(1kHz,32Ω)
20Hz ~ 50kHz, attenuation ≤ 0.1dB Noise floor 0.8uV"A"
THD+N <0.0006%(-5dB,32Ω) SNR ≥ 127dB (32ΩA weight)
Performance and parameters of headphone output (4.4mm)
Output power L+R≥150mW+150mW(16Ω,THD+N<1%.USB IN) Peak output voltage ≥2.9V(32Ω,THD+N<1%)
L+R≥260mW+260mW(32Ω,THD+N<1%,USB IN)
L+R≥54mW+54mW(300Ω,THD+N<1%,USB IN) Output impedance <0.7Ω
Frequency response 20Hz ~ 20kHz, attenuation ≤ 0.1dB Crosstalk ≥ 125dB(1kHz,32Ω)
20Hz ~ 50kHz, attenuation ≤ 0.1dB Noise floor 0.8uV"A"
THD+N <0.0004%(-5dB,32Ω) SNR ≥ 131dB (32ΩA weight)

 

Frequency response curve 1
Test conditions: Local playback, -5dB sinusoidal signal, 20Hz–20kHz headphone out (32Ω load)
Blue: Left channel Red: Right channel

Frequency response curve 2
Test conditions: Local playback, -5dB sinusoidal signal, 20Hz–20kHz balanced headphone out (32Ω load)
Blue: Left channel Red: Right channel

THD+N Curve 2
Test conditions: Local playback, -5dB sinusoidal signal, 20Hz–20kHz balanced headphone out (32Ω load)
Blue: Left channel Red: Right channel

THD+N Curve 1
Test conditions: Local playback, -5dB sinusoidal signal, 20Hz–20kHz headphone out (32Ω load)
Blue: Left channel Red: Right channel

Amplitude distortion diagram 2

Test conditions: Local playback, 0dB sinusoidal signal, desktop mode balanced headphone out (600Ω)

Amplitude distortion diagram 1

Test conditions: Local playback, 0dB sinusoidal signal, desktop mode headphone out (600Ω)